# 01-判断.py
'''
    if 条件:
        True
    else:
        False
'''
a=0
if a>10:
    print('真钱')
else:
    print('假的')

#连续判断 2、分数: 80-100 A   70-80 B   60-70 C <60 D
score = float(input('请输入成绩：'))
if score>=80 and score<=100:
    print('A')
elif score>=70 and score<80:
    print("B")
elif score>=60 and score<70:
    print('C')
else:
    print('D')
